EP0920963A1 - Stapling device - Google Patents
Stapling device Download PDFInfo
- Publication number
- EP0920963A1 EP0920963A1 EP98121695A EP98121695A EP0920963A1 EP 0920963 A1 EP0920963 A1 EP 0920963A1 EP 98121695 A EP98121695 A EP 98121695A EP 98121695 A EP98121695 A EP 98121695A EP 0920963 A1 EP0920963 A1 EP 0920963A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure spring
- staple
- stapling device
- spring
- forming member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
- B27F7/00—Nailing or stapling; Nailed or stapled work
- B27F7/17—Stapling machines
- B27F7/26—Stapling machines without provision for bending the ends of the staples on to the work
- B27F7/28—Stapling machines without provision for bending the ends of the staples on to the work with means for forming the staples in the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
- B27F7/00—Nailing or stapling; Nailed or stapled work
- B27F7/17—Stapling machines
- B27F7/19—Stapling machines with provision for bending the ends of the staples on to the work
- B27F7/21—Stapling machines with provision for bending the ends of the staples on to the work with means for forming the staples in the machine
- B27F7/23—Stapling machines with provision for bending the ends of the staples on to the work with means for forming the staples in the machine with rotary drive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Description
- The invention relates to a stapling device for stapling a stack of sheets by means of staples, in which the staples are formed from wire in the stapling device and are subsequently driven into the sheet stack.
- Stapling devices are known (US-PS 4,557,410 and DE 40 20 355 C2) in which the individual functions required for stapling are controlled by means of a cam control system and associated levers as transfer elements. In these known stapling devices, individual functions for stapling are activated, upon rotation of a drive plate through an angular range, by means of the shape of the cam plate and the transfer elements engaging thereon.
- DE 73 24 364 U1 discloses a stapling device of the generic type with which a wire segment is cut off from a staple wire supply and formed into a staple. A bender forming the staple has a counterbearing for a pressure spring which is arranged in a displaceable driver. When the bender is driven, the movement of the driver is inhibited until the bending operation for producing the staple is complete. At the same time, the pressure spring is preloaded. After completion of the bending operation, the driver is enabled so that, under the influence of the preloaded pressure spring, it can drive the finished staple into the sheet stack.
- The known stapling devices are susceptible to wear and malfunction because of their complex construction, and moreover require a comparatively large installation space.
- It is the object of the invention to configure a stapling device of the generic type in such a way as to guarantee not only simple construction but also operationally correct and reliable function.
- According to the invention, this object is achieved in that
- the stapling device has a holddown element, a staple forming member, and a staple driving means, which are guided linearly and are movable perpendicular to the upper side of the stack;
- a first, a second, and a third pressure spring, with identical working directions but with different spring forces in each case, are arranged perpendicular to the upper side of the stack;
- the first pressure spring engages on the holddown element associated with the upper side of the stack and has a low spring force;
- the second pressure spring is associated with the staple forming member and has a spring force which is greater than that of the first pressure spring;
- the third pressure spring is associated with the staple driving means and has a spring force which is greater than that of the second pressure spring;
- the pressure springs can be acted upon by a common drive mechanism of the stapling device which is movable in the working direction of the pressure springs;
- the drive mechanism is associated with the one end of the pressure spring arrangement; and
- the other end of the pressure spring arrangement faces toward the sheet stack to be stapled.
- The arrangement, configuration, and manner of operation of the pressure springs according to the invention result, advantageously, in a force-controlled operating sequence for the stapling device such that when the stapling device is actuated, first of all the first pressure spring with the lowest spring force is compressed, and then the second pressure spring with the higher spring force, and lastly the third pressure spring with the highest spring force, so that the temporal sequence of the stapling operation is controlled in operationally correct fashion in a simple manner with little wear.
- Advantageously, the pressure springs are each arranged, in accordance with their spring force, in preloaded fashion between those associated subassemblies which are actuated successively in temporal sequence. Advantageously, the adjacent subassemblies have projections against which the ends of the particular associated pressure springs can brace.
- The subassemblies of the stapling device are, advantageously, guided in linearly displaceable fashion, thus making possible components of simple configuration which can move reliably and with little wear. Actuation of the device can moreover be accomplished by means of a simply constructed drive, so that the entire stapling device can be produced economically and can be configured in space-saving fashion.
- Because simple pressure springs are used, the spring force-controlled functional sequence of the stapling device according to the invention is particularly robust and reliable.
- Further features and advantages are evident from the description of an embodiment of the invention depicted in the drawings, and from the claims.
- The schematic drawings show in
- Fig. 1
- the device in its initial position;
- Fig. 2
- the device according to Fig. 1, during application onto the sheet stack;
- Fig. 3
- the device according to Fig. 1, as the staple is being formed;
- Fig. 4
- the device according to Fig. 1, during penetration of the staple; and
- Fig. 5
- the device according to Fig. 4, during compensation for stack thickness.
- To simplify the drawing, only the components of a
stapling device 1 which are essential to the invention are illustrated in their schematic configuration. -
Stapling device 1 substantially comprises aholddown element 9 with an associatedfirst pressure spring 13 having a low spring force C1, astaple forming member 7 with an associatedsecond pressure spring 14 having a spring force C2 which is greater than that offirst pressure spring 13, a staple driving means 6 with an associatedthird pressure spring 15 having a spring force C3 which is greater than that ofsecond pressure spring 14, abending block 8 associated withstaple forming member 7, aneccentric drive drive head 5 associated with the latter and withthird pressure spring 15. -
Holddown element 9,staple forming member 7, staple driving means 6, anddrive head 5 are guided in linearly displaceable fashion on asupport 3 ofstapling device 1 in a known manner (not depicted). - Staple driving means 6 on which
staple forming member 7 is displaceably guided has in the guidance region a T-shaped extension 6b. Saidextension 6b delimits the maximum distance between aprojection 6a of staple driving means 6 and aprojection 7a ofstaple forming member 7, withpressure spring 14 being arranged in preloaded fashion between said twoprojections - Similar connections, not depicted in order to simplify the drawing, also exist between
drive head 5 andprojection 6a of staple driving means 6, between whichpressure spring 15 is arranged in preloaded fashion, and betweenprojection 6a ofstaple forming member 7 andholddown element 9, between whichpressure spring 13 is arranged in preloaded fashion. - The dimensions of
pressure springs sheet stack 10 to be stapled and of the nature of the sheet and/or film material to be stapled, in such a way that, for example,pressure spring 15 has a preload force of 250 to 300 N, pressure spring 14 a preload force of 80 N, and pressure spring 13 a preload force of 20 N. If only thinner sheet stacks are to be stapled, a preload force of 100 N may then be sufficient forpressure spring 15. -
Staple wire 11 for the forming ofstaples 12 is delivered tostapling device 1 in the direction of the arrow "A" and is stored in known fashion (not depicted) on a wire spool. After delivery tostapling device 1,staple wire 11 is cut off also in a known fashion (not depicted), to a length necessary for the staple size, the length of the cut-off wire segment being adaptable in known fashion to the sheet stack thickness to be stapled. - The mode of operation of the device is as follows:
The initial position ofstapling device 1 depicted in Fig. 1 is determined by the inactive position ofeccentric drive pressure springs individual components lower limiting means 16 ofstapling device 1 assumes a defined distance "a" from collectingstation 2. - Once the sheets to be stapled have been collected in collecting
station 2 into asheet stack 10 and have been accurately aligned by known means (not depicted),eccentric drive 4 is set in rotary motion in the direction of the arrow "C". A crank rod articulated oneccentric drive 4 eccentrically with respect to the rotation axis thereof is joined at its other end to drivehead 5, and moves the latter in the direction of the arrow "B". - The
entire stapling device 1 is thereby moved, by means of the strongestthird pressure spring 15, downward in the direction of the arrow "B", untilholddown element 9 shown in Fig. 2 rests onsheet stack 10 and compresses it. - Upon further movement in the direction of the arrow "B", the ends of the wire segment, as visible in Fig. 3, are bent downward around
bending block 8 bystaple forming member 7, thereby formingstaple 12. This bending operation takes place under the influence of the second,stronger pressure spring 14, which overcomes the strength of the first,weaker pressure spring 13 and compresses the latter. - Once
staple 12 has been formed, further movement of the stapling device in the direction of the arrow "B" first moves bendingblock 8 in a manner not depicted to the side away fromstaple 12, so that it lies outside the further movement path of staple driving means 6. - The actual stapling operation is then performed by driving
staple 12 intosheet stack 10, as shown in Fig. 4. This is accomplished by staple driving means 6 which is driven by theeccentric drive third pressure spring 15 to overcome the force of the weakersecond pressure spring 14 and to move staple driving means 6 in the direction of the arrow "B", thereby compressingsecond pressure spring 14. While being driven in, the legs ofstaple 12 are positively guided in a known fashion (not depicted) on lateral guide grooves ofstaple forming member 7. - Once
staple 12 has penetrated intosheet stack 10, the staple ends protruding from the underside ofsheet stack 10 are laid in known fashion by means of a clinching device (not depicted) against the back side ofsheet stack 10.Eccentric drive third pressure spring 15. - After completion of the stapling operation,
stapling device 1 is moved back in a direction opposite to the direction of the arrow "B", by means ofeccentric drive pressure springs stapling device 1,bending block 8 is pivoted back into its working position beneathstaple forming member 7.
Claims (2)
- Stapling device for stapling a stack of sheets by means of staples, in which the staples are formed from wire in the stapling device and are subsequently driven into the sheet stack, characterized in thatthe stapling device (1) has a holddown element (9), a staple forming member (7), and a staple driving means (6), which are guided linearly and are movable perpendicular to the upper side of the stack;a first, a second, and a third pressure spring (13, 14, 15), with identical working directions but with different spring forces in each case, are arranged perpendicular to the upper side of the stack;the first pressure spring (13) engages on the holddown element (9) associated with the upper side of the stack and has a low spring force (C1);the second pressure spring (14) is associated with the staple forming member (7) and has a spring force (C2) which is greater than that of the first pressure spring (13);the third pressure spring (15) is associated with the staple driving means (6) and has a spring force (C3) which is greater than that of the second pressure spring (14);the pressure springs (13, 14, 15) can be acted upon by a common drive mechanism (4, 17) of the stapling device (1) which is movable in the working direction of the pressure springs (13, 14, 15);the drive mechanism (4, 17) is associated with the one end of the pressure spring arrangement (13, 14, 15); andthe other end of the pressure spring arrangement (13, 14, 15) faces toward the sheet stack (10) to be stapled.
- Stapling device as defined in Claim 1, characterized in thatthe first pressure spring (13) is arranged in preloaded fashion between the holddown element (9) and the staple forming member (7, 7a);the second pressure spring (14) is arranged in preloaded fashion between the staple forming member (7, 7a) and the staple driving means (6, 6a); andthe third pressure spring (15) is arranged in preloaded fashion between the staple driving means (6, 6a) and a counterbearing (5) that is movable by the drive mechanism (4, 17).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752286 | 1997-11-26 | ||
DE19752286A DE19752286A1 (en) | 1997-11-26 | 1997-11-26 | Stapler for stack of paper sheets |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0920963A1 true EP0920963A1 (en) | 1999-06-09 |
EP0920963B1 EP0920963B1 (en) | 2003-04-02 |
Family
ID=7849814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98121695A Expired - Fee Related EP0920963B1 (en) | 1997-11-26 | 1998-11-13 | Stapling device |
Country Status (4)
Country | Link |
---|---|
US (1) | US5996876A (en) |
EP (1) | EP0920963B1 (en) |
JP (1) | JPH11207652A (en) |
DE (2) | DE19752286A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113561277A (en) * | 2021-06-07 | 2021-10-29 | 杭州亚太智能装备有限公司 | Pneumatic flat nail rifle |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE525369C2 (en) * | 2001-09-14 | 2005-02-08 | Isaberg Rapid Ab | Stapler in a stapler |
DE102006000139B3 (en) * | 2006-03-28 | 2007-10-18 | Hilti Ag | Hand-guided tacker |
US11331824B2 (en) | 2016-06-29 | 2022-05-17 | Valinge Innovation Ab | Method and device for inserting a tongue |
LT3478901T (en) | 2016-06-29 | 2021-06-25 | Välinge Innovation AB | Method and device for inserting a tongue |
WO2018004439A1 (en) | 2016-06-29 | 2018-01-04 | Välinge Innovation AB | Method and device for inserting a tongue |
CN109311179B (en) | 2016-06-30 | 2021-09-17 | 瓦林格创新股份有限公司 | Device for inserting a tongue |
ES2903096T3 (en) | 2016-12-22 | 2022-03-31 | Vaelinge Innovation Ab | Device for inserting a tongue into an insertion slot in a panel |
EP3718437A1 (en) | 2019-04-05 | 2020-10-07 | Välinge Innovation AB | Method for assembling a piece of furniture |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1705819A (en) * | 1926-07-02 | 1929-03-19 | Alexander Z Kruse | Stapling machine |
FR779198A (en) * | 1934-10-03 | 1935-03-30 | Staples making and setting machine | |
GB678154A (en) * | 1947-06-05 | 1952-08-27 | Bocjl Corp | Improvements in or relating to fastener driving devices |
EP0379457A2 (en) * | 1989-01-18 | 1990-07-25 | Tolemecane S.A.R.L. | Portable machine for automatic stapling, and staple so applied |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3231168A (en) * | 1963-11-18 | 1966-01-25 | Powers Wire Products Company I | Fastener forming and driving tool |
DE7324364U (en) * | 1973-06-30 | 1981-02-26 | Fa. E.C.H. Will (Gmbh & Co), 2000 Hamburg | STAPLE HEAD |
DE2642896C3 (en) * | 1976-09-24 | 1980-08-21 | 7800 Freiburg | Precision snapper for setting standard stab wounds in the skin for diagnostic purposes |
US4356947A (en) * | 1978-12-29 | 1982-11-02 | Xerox Corporation | Stitchers |
US4318555A (en) * | 1980-01-15 | 1982-03-09 | Eastman Kodak Company | Stapler |
US4557410A (en) * | 1983-08-30 | 1985-12-10 | International Business Machines Corporation | Stapler mechanism powering means |
JPS6279977A (en) * | 1985-09-24 | 1987-04-13 | キヤノン株式会社 | Needle feeder for stapler |
ES2042139T3 (en) * | 1989-05-25 | 1993-12-01 | Ferag Ag | BINDING APPARATUS. |
DE4020355C2 (en) * | 1990-06-27 | 1996-02-29 | Kodak Ag | Stapler for stapling sheets together |
-
1997
- 1997-11-26 DE DE19752286A patent/DE19752286A1/en not_active Withdrawn
-
1998
- 1998-10-30 JP JP10309686A patent/JPH11207652A/en active Pending
- 1998-11-13 DE DE69812851T patent/DE69812851T2/en not_active Expired - Fee Related
- 1998-11-13 EP EP98121695A patent/EP0920963B1/en not_active Expired - Fee Related
- 1998-11-19 US US09/195,907 patent/US5996876A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1705819A (en) * | 1926-07-02 | 1929-03-19 | Alexander Z Kruse | Stapling machine |
FR779198A (en) * | 1934-10-03 | 1935-03-30 | Staples making and setting machine | |
GB678154A (en) * | 1947-06-05 | 1952-08-27 | Bocjl Corp | Improvements in or relating to fastener driving devices |
EP0379457A2 (en) * | 1989-01-18 | 1990-07-25 | Tolemecane S.A.R.L. | Portable machine for automatic stapling, and staple so applied |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113561277A (en) * | 2021-06-07 | 2021-10-29 | 杭州亚太智能装备有限公司 | Pneumatic flat nail rifle |
Also Published As
Publication number | Publication date |
---|---|
DE69812851T2 (en) | 2004-03-04 |
EP0920963B1 (en) | 2003-04-02 |
JPH11207652A (en) | 1999-08-03 |
DE69812851D1 (en) | 2003-05-08 |
US5996876A (en) | 1999-12-07 |
DE19752286A1 (en) | 1999-05-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4378085A (en) | Stapler apparatus having a mechanism for bending and cutting staple legs in accordance with the thickness of the work piece | |
EP0920963B1 (en) | Stapling device | |
US4546910A (en) | Active clinchers and wire stitchers incorporating same | |
US6257477B1 (en) | Stapler with internal guidance of the legs of a staple | |
US7621433B2 (en) | Stapler | |
US5330086A (en) | Electromotive stapler | |
EP0636059B1 (en) | Stapler | |
US5887339A (en) | Device for use in a press for feed of fasteners and for their attachment in workpieces by pressing | |
US4995542A (en) | Stapling apparatus for fixing junction staples on the end of a conveyor belt or the like | |
EP0381226B1 (en) | Apparatus for protecting light projector from collision with punch of button setting machine | |
US7121440B2 (en) | Motor-driven stapler having a driver and a cylinder unit that vertically reciprocates | |
EP0919343A1 (en) | Stapling device | |
EP0485846B1 (en) | Sheet-stapling device | |
EP0051447B1 (en) | A stapling apparatus | |
EP1655109A1 (en) | Locking mechanism for stapler paper presser table | |
EP1535709A1 (en) | Electric stapler | |
US6986449B2 (en) | Staple-former in a stapler | |
EP0381227B1 (en) | Stroke adjustment apparatus for light projector of button setting machine | |
JP3975354B2 (en) | Return mechanism in stapler | |
US3876129A (en) | Staple stitchers | |
CN100418704C (en) | Releasable staple magazine with a releasable staple forming arrangement | |
EP1577061B1 (en) | Electric stapler | |
JP4304971B2 (en) | Paper thickness adjustment mechanism in an electric stapler | |
EP4338907A1 (en) | Image forming system, post-processing apparatus and binding device | |
JPH01130903A (en) | Stapler device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
K1C1 | Correction of patent application (title page) published |
Effective date: 19990609 |
|
17P | Request for examination filed |
Effective date: 19991117 |
|
AKX | Designation fees paid |
Free format text: DE FR GB |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NEXPRESS SOLUTIONS LLC |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030402 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 69812851 Country of ref document: DE Date of ref document: 20030508 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031113 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
EN | Fr: translation not filed | ||
26N | No opposition filed |
Effective date: 20040105 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20031113 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20051130 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070601 |